Wireless Communication System, Wireless Station, and Mobile Object Information Sharing Method

1. A wireless communication system that is mounted on a mobile object, the system comprising: a first communication device and a second communication device that are mounted on a first mobile object, wherein, when information is shared by mobile objects by transmitting packets based on information acquired from a network within the first mobile object to a communication device mounted on a second mobile object, the first communication device and the second communication device transmit packets having the same content by adopting the same communication method and using different channels, and a signal transmission timing from the second communication device is set to be later than a transmission timing from a communication device from the first communication device.

2. The wireless communication system according to claim 1 , wherein a transmission power from the second communication device is set to be higher than a transmission power from the first communication device.

3. The wireless communication system according to claim 1 , wherein the second moving object includes a third communication device and a fourth communication device, when the packets from the first communication device and the second communication device are transmitted to the third communication device and the fourth communication device, the same packets are transmitted by using different channels by forming a first channel between the first communication device and the third communication device and forming a second channel between the second communication device and the third communication device, and information to be transmitted to a network within the second mobile object is constituted by using a packet having a short delay among the same packets obtained from different channels in the second mobile object.

4. A wireless station that is mounted on a mobile object, the wireless station comprising: a first communication device and a second communication device, wherein, when signals are transmitted to communication devices mounted on a different mobile object, the first communication device and the second communication device transmit the same signals by using different channels from each other, and a signal transmission timing from the second communication device is set to be later than a transmission timing from a communication device from the first communication device.

5. The wireless station according to claim 4 , wherein a transmission power from the second communication device is set to be higher than a transmission power from the first communication device.

6. The wireless station according to claim 4 , wherein the first communication device and the second communication device adopt a wireless Local Area Network (LAN), and different frequencies are allocated as the different channels.

7. The wireless station according to claim 4 , wherein the first communication device and the second communication device are able to be operated in a first mode in which packets having the same content are transmitted at different timings within a predetermined same period and a second mode in which packets having the same content are transmitted within predetermined different periods, and are able to select the first mode and the second mode.

8. The wireless station according to claim 7 , wherein the first mode and the second mode are selected based on a delay variation of a transmission timing.

9. A mobile object information sharing method of sharing information with another mobile object through wireless communication, the method comprising: setting a transmission timing from a second communication device to be later than a transmission timing from a first communication device when the first communication device and the second communication device mounted on a first mobile object and a third communication device and a fourth communication device mounted on a second mobile object are used and the same transmission signals are transmitted to the third communication device and the fourth communication device from the first communication device and the second communication device by using different channels.

10. The mobile object information sharing method according to claim 9 , wherein a transmission power from the second communication device is set to be higher than a transmission power from the first communication device.

11. The mobile object information sharing method according to claim 9 , wherein the first communication device to the fourth communication device adopt a wireless Local Area Network (LAN), and a first frequency channel is allocated between the first communication device and the third communication device, and a second frequency channel different from the first frequency channel is allocated between the second communication device and the fourth communication device.

12. The mobile object information sharing method according to claim 9 , wherein the first communication device and the second communication device are able to be operated in a first mode in which packets having the same content are transmitted at different timings within a predetermined same period and a second mode in which packets having the same content are transmitted in predetermined different periods, and are able to select the first mode and the second mode.

13. The mobile object information sharing method according to claim 12 , wherein the first mode and the second mode are selected based on a delay variation of a transmission timing.

14. The mobile object information sharing method according to claim 9 , wherein the mobile objects are vehicles moving on a road, and an interval between the first communication device and the second communication device has, as an upper limit, a width dimension of a vehicle which is the first mobile object, and an interval between the third communication device and the fourth communication device has, as an upper limit, a width dimension of a vehicle which is the second mobile object.

15. The mobile object information sharing method according to claim 9 , wherein the first communication device to the fourth communication device adopt one method selected from a wireless Local Area Network (LAN), a wireless Personal Area Network (PAN), and Dedicated Short-Range Communications (DSRC.